Phonographic horn.



No. 361,206. PATENTED JULY 23, 1907.

L. DEVINEAU. PHONOGRAPHIG HORN.

APPLICATION FILED FEB. 9, 1907.

irroif/vim LOUIS DEVINEAU, OF CLEVELAND, OHIO.

amen.

rnonoensrmcnonn.

Specification of Letters Patent.

Patented July 23, 1907.

Application filed February 9, 1907. Serial No. 356,513..

To all wh m it may concern:

' Be it known that I, LOUIS DEVINEAU, a citizen of th United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented'a certain new and useful Improvement in Phonographic Horns, of which the iollowir1 g is a full, clear, and. exact description, reference being bad to the accompanying drawings.

My invention relates to phonographic horns, and has for its object to provide a horn which shall be of such size as to sufficiently amplify the sounds produced in the operation of phonographs and at the same time so construct and proportion the parts of said horn as to dispense with the necessity of using a special support therefor, the horn being carried and supported entirely by the tubular portion of the reproducer.

A further object of the invention is to relieve the bearings on which the carriage traverses from undue friction. I v

A still further object of the invention is to produce a horn of this type which is extremely light and attracglve' in appearance and which may be cormeniently assembled and disassembled.

I accomplish the above results by the construction shown in the drawings forming part hereof, wherein Figure 1 represents a side elevation of a phonograph of standard construction having my horn applied thereto; Fig. 2 represents anenlarged detail, partly in elevation and partly invsection, of my horn, a portion 7 of the reproducer being shown in dotted lines; Fig. 3 represents an end elevation of the elbow of the horn; and Figs. 4, 5, and 6 represent details of the bell of the horn Describing the parts by reference numerals, 1 represents a phonograph, which may be of any approved construction. The phonograph is associated with the box or base 2 wherein the mechanism is contained for rotating the mandrel and driving the carriage. I

3 represents the frame within which is mounted the mandrel 4. This frame isprovided with a rod 5 and bearing plate Gwhereon the carriage 7 is sppported which bears the reproducer 8 and horn 9. r

10 represents the operating lever by which the repro- 1 ducer stylus is lifted out of engagement with the cylin this elbow is provided with a reduced downwardly and r rearwardly extending end portion 11 adapted to fit oven the tube 8 projecting from the reproducers. Fromilic f upper end of 11, the body of the elbow extends reai wardly, gradually increasing in cross-sectional area to? the mouth thereof, the smooth portion 'of the elbow projecting forwardly and upwardly, as shown, from the bend 15. The elbow is made of metal and is considerably heavier in proportion to its dimensions than the bell. When connected to the reproducer, the main' body of the elbow extends rearwardly a considerable distance behind the mandrel 4, being bent upwardly and rearwardly at '16 and upwardly and forwardly 3.515. The bell 1.4: is connected to the elbow by having its lower or reduced end telescoped thereinto and secured in place by a construction which will hereinafter be de scribed in detail. This bell is of the flaringtype and is ofsufficient extent to adequately amplify the sounds produced by the phonograph. At the same time, owing V to the rearward projectio'ri of the elbow, the front and '75 enlarggiend ofthe bell but slightly overhangs the corn esponding portion of the phonograph. This not only provides a compact construction of horn, but, as will more fully appear hereinafter, secures a distribution of the weight of the horn in such manner as to reduce to a minimum the friction produced between the carriag and its bearings. a

As previously stated, the elbow 12 is made of metal while. the bell is made of extremely light material. I have found paper to be admirably adapted for the main body of the bell and, by suitablyqeinforcing and strengthening the same with light meta ,\as aluminium, I 'adnenabled to produce a bell Whic is not only efficient but extremely light of construction. The paper of which the b 0dy of the bell is constructed is composed of a number odongitudinal segments 17 7 increasing in width'from the liotpom to the top thereof. These segments are connected y means of longitudinal ribs 18, and the mouth of t bellis bound around by metallic binding 19. The longitudinal ribs 18 and binding" 19 are of very light nietal, prefer-' ably aluminium. As a simple and effective manner of connecting the longitudinal edges of adjacent segments, -I may construct the ribs as shown more particularly in Fig. 6. Atequal distances on each side of thelongitudinal center f the blank, the metal is bent back or folded upon itself and each side portion is again folded, the points of folding being so selected that the outer.edges"20 will be substantially flush with the edge 21 of the iolded metalfgtherebeneath and the inner edges 22 of the parts Which are first folded will be in substantial contact. Thiscan be accomplished by making the bend 'atahoutone-third the distance from the longitudinal center to the edge, then by making the next bend at substantially the same distance from the first bend. fprms. re-

se e Z a-i. like-1'6 r e bf he edges-0 'qrpo e segments 17. By subjecting the metal to suitable pressure, a firm joint is made between adjacent segments and the main body of the bell is reinforced with but slight increase in weight. I

The outer ends of the bell segments are bound by the metal binding 19 to'whi ch reference has been made hereinbefore. This binding is preferably of aluminium and is made up of a number of individual strips which embrace opposite sides of the outer edge of each segrib 18. Clips 24 have each a pair of side wings 26 adapted to receive the opposite ends of binding sections 19. By means of suitable rivets 27, 28, clamp 24 is secured to sections 19 and rib 18. This clamp may also be'of aluminium and makes a light and firm connection between the ribs and the binding sections.

The bell is provided at the lower end thereof with a light metal fitting which not only clamps together the lower or reduced ends of the segments of which it is composed but facilitates the application of the bell to the elbow. This fitting comprises an inner band 29 of thin metal and an outer band 30 of the same material, which are riveted together and to the ribs. The lower end of the inner band is extended considerably beyond the corresponding end of the outer band to form a neck 31 and said outer band may beconnected to said neck, as by soldering.

The outer surface of the neck is tapered toward the.

end thereof to enable it to be easily inserted within the flaring inner face of the mouth 32 of the elbow. To enable the bell and elbow to be quickly connected and disconnected, I provide a pin 33 which projects upwardly from the lower portion of mouth 32, said pin being adapted to be inserted into a corresponding aperture 34 in the neck 31., Directly-opposite pin 33, the mouth 32 is provided with a slot- 35 extending inwardly from the outer edge thereof, the metal being suitably thickened at 35 to prevent weakening the inouth 'by the provision of the slot and to iorm a bearing for the head of a thumb-screw. The corresponding part of neck 31 is thickened to form a suitable carrier 36 for the thumb-' screw 37. By unscrewing the thumb-screw a suitable distance, the bell may be applied to the elbow by inserting pin 33 into aperture 34. Then by swinging the bell upwardly onsaid pin as a pivot, the upper portion of the neck 3 1 maybe inserted within the corresponding portion of the elbow mouth and the shank of the screw simultaneously slid into the slot 35. Then by merely tighteniiig the screw 37, the bell is el'lectively clamped in place. In order to remove the bell, it is only necessary toslack up the screw 37, allow the outer end or mouth of the bell to drop and then lift the lower portion of neck 31 off the pin 33.

By giving to my horn the peculiar shape shown and dc-scribed and by making the elbow 12 of relatively bearings, without sacrificing the size of the horn. This is an important advantage in that it distributes the weight of the horn evenly between the two carriage bearings 5 and 6, enabling the carriage with the attached horn to be moved along the frame with a minimum of friction. This result is furthered by the fact that the portions of the horn where the most metal is present the connection between the bell and the elbow) is at the rear of the mandrel axis. Furthermore, the short distance between the center of gravity of the horn and the point of connection between the lower end of the elbow and the tubular extension 8 of the reproducer enables a large horn to be used with no support other than said extension. Where the center of gravity of a horn is in front of the vertical plane midway between the bearings there is excessive friction on the slide 6, while if'it were at the rear of that plane not only would the friction be excessive on the rod 5, but the horn would exert a tendency to tip the carriage over backward.

By the construction herein described, I have produced a phonographic horn which may be very conveniently and quickly taken apart for purposes oishipmentand as quickly and conveniently assembled thereafter; which is light and cheap of construction and efii cient in operation; which is so constructed and proportioned as to enable the carriage to traverse the mandrel with the development of a minimum amount of friction; and which requires no supporting means other than the tubular extension of the reproducer.

Having thus described my invention, I claim:

1. The combination with. the mandrel, carriage, two supports along which the carriage travels, and the repio ducer supported by the carriage between the supports, of a horn supported by the reproducer and having an elbow extending beyond one of the carriage supports, suld horn having its center of gravity ln :1 vertical llne passing between said supports.

2. The combination with the mandrel and reproducer of. a phonograph, of a phonographlc horn, comprising an elbow connected to said reproducer, said elbow extending reurwardly of the mandrel, and a forwardly projecting hell on said elbow, a carriage in which the reproducer is mounted and two supports on which the carrluge travels, the complete horn being supported by the reproducer and having its center ot. gravity in a vertlcul line passing between the supports for the carriage.

3. A phonographlc horn comprising an elbow buying a down-turned end adapted for connection wlth a reproducer, s. taper-lug body portion extending rearwiudly from said end and an rip-turned mouth carried by said body portion, and :1 bell projecting forwardly from said mouth, combined with a record rotator and means for supporting the born with its center of gravity over the axis of rotu- .tlon, substantially as specified.

the record, and means for supporting the born with its.

center of uravlty substantially over the axis of rolatlon,

substnntlally as spcclllcd. Y

its center of gravity In a plane substantiallycoincident.

wlth the axls of the mandrel, whereby the necessity for supportlng means other than the tubular extension is dis 'pcnsod with, substantially as spcclllcd.

G. The combination, wlth the mandrel and rcproducer of a phonograph, said reproducer having a tubular extension, of a large horn comprising an elbow and a bell, the lower end 01' said elbow being dmvn-turned and adapted to be tilted to the tubular extension of the rtaa'oducer and the body of s: d elbow projecting rearwardly beyond the mandrel and the bell projecting forwardly from the elbow. the center of gravity of the horn being in a vertical plane passing through the mandrel, whereby the nor .ity for any support other than the tubular extension is avoided, substantially as speeilied.

T. The combination, with means for carrying and rotating a record, of a sectional horn having a flaring bell and a ountraeting elbow separable from each other and means for supporting the burn with its center of gravity in a plane substantially coincident with the axis oi rotation of the reeord.

8. The combination, with the mandrel, carriage and re producer cf a phonograph, ot a horn comprising an elbow secured to the carriage by the reprodurer, and a tlaring bell connected with the elbow and located over the main portion of the elbow and over the mandrel, the center of gravity of the horn being substantially coincident in the vertical plane through the axis of the mandrel.

it. A phonographie horn comprising a metallic elbow having a down-turned end adapter for connection with a reproducer, a tapering body portion extending rearwardly from said end, an up-turned mouth carried by said body portion, and a bell of relatively light material detrachably seeured to said mouth and projecting forwardly therefrom. combined with a reproduccr supporting said born, a can riage supporting said reproducer, and two supports on which the carriage rides, the horn having its center ot gravity in a vertical plane lying substantially midway between said suppor s.

10. The combination, with means for eat-tying and rotating a record. of a sectional horn having a daring bell and a eontattting elbow, separable from each other, a traveling carrla e. two supports therefor, and a reprodueer carried by the earitxgo and supporting the. born with its center of gravity in a vertical line between said supports.

it. The combination with the mandrel, carriage, two parallel supports on which the arriage rides, and the rcproducer supported by the carriage, of a horn comprising an elbow i ssociated with the reproducer and supported bv the car. e, and a ilaring boll separably connected wt Al the elbow and locatedove'r the main portion oi the. elbow and over the mandrel, the vertical line through the center of 'gravity of said horn passing between said supports. whereby the weight oi. the horn is distributed thereon.

in testimony whereof, I hereunto alliX my signature in the presenee of two witnesses.

LOUIS llEVlNl'lAU.

Witnesses:

W. L. Metlannnnn, .T. I llunn. 

